JPS6429861A - Binary developer - Google Patents

Binary developer

Info

Publication number
JPS6429861A
JPS6429861A JP62185762A JP18576287A JPS6429861A JP S6429861 A JPS6429861 A JP S6429861A JP 62185762 A JP62185762 A JP 62185762A JP 18576287 A JP18576287 A JP 18576287A JP S6429861 A JPS6429861 A JP S6429861A
Authority
JP
Japan
Prior art keywords
toner
charged
friction
polymer layer
carrier
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP62185762A
Other languages
Japanese (ja)
Inventor
Hidenobu Yamane
Eiichi Kido
Fumie Nishino
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sharp Corp
Original Assignee
Sharp Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sharp Corp filed Critical Sharp Corp
Priority to JP62185762A priority Critical patent/JPS6429861A/en
Publication of JPS6429861A publication Critical patent/JPS6429861A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles
    • G03G9/10—Developers with toner particles characterised by carrier particles
    • G03G9/113—Developers with toner particles characterised by carrier particles having coatings applied thereto

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Developing Agents For Electrophotography (AREA)

Abstract

PURPOSE:To facilitate control of a charge quantity of a toner by forming as a carrier coating agent a polymer layer to be charged to a positive or negative polarity by friction with the toner. CONSTITUTION:The polymer layer to coat the surface of the carrier has positive or negative triboelectrifiability at the time of friction with the toner. Accordingly, when the toner is stirred, the polymer layer coating the surface of the carrier comes into friction with the toner and is charged by the friction, and the toner is also charged to the reverse polarity, and when the selected polymer material is situated in the upper triboelectrification series in relation to the toner, it is charged positively, and when the polymer material in the lower series is selected, it is charged negatively, thus permitting the charge quantity of the toner to be controlled.
JP62185762A 1987-07-25 1987-07-25 Binary developer Pending JPS6429861A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62185762A JPS6429861A (en) 1987-07-25 1987-07-25 Binary developer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62185762A JPS6429861A (en) 1987-07-25 1987-07-25 Binary developer

Publications (1)

Publication Number Publication Date
JPS6429861A true JPS6429861A (en) 1989-01-31

Family

ID=16176428

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62185762A Pending JPS6429861A (en) 1987-07-25 1987-07-25 Binary developer

Country Status (1)

Country Link
JP (1) JPS6429861A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5665509A (en) * 1996-11-13 1997-09-09 Nashua Corporation Electrophotographic carrier compositions having improved life

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5665509A (en) * 1996-11-13 1997-09-09 Nashua Corporation Electrophotographic carrier compositions having improved life

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